[U-Boot] [PATCH 1/2] gpio: add gpio api support to mx27 (v4)
Philippe Reynes
tremyfr at yahoo.fr
Sat Aug 25 17:30:33 CEST 2012
The gpio api has been tested on an armadeus apf27.
Signed-off-by: Philippe Reynes <tremyfr at yahoo.fr>
---
arch/arm/cpu/arm926ejs/mx27/generic.c | 11 +++---
arch/arm/include/asm/arch-mx27/gpio.h | 55 +++++++++++++++++++++++++++++
arch/arm/include/asm/arch-mx27/imx-regs.h | 30 ++++------------
drivers/gpio/mxc_gpio.c | 8 +++--
4 files changed, 73 insertions(+), 31 deletions(-)
create mode 100644 arch/arm/include/asm/arch-mx27/gpio.h
diff --git a/arch/arm/cpu/arm926ejs/mx27/generic.c b/arch/arm/cpu/arm926ejs/mx27/generic.c
index 65c4813..41bb84b 100644
--- a/arch/arm/cpu/arm926ejs/mx27/generic.c
+++ b/arch/arm/cpu/arm926ejs/mx27/generic.c
@@ -24,6 +24,7 @@
#include <asm/io.h>
#include <asm/arch/imx-regs.h>
#include <asm/arch/clock.h>
+#include <asm/arch/gpio.h>
#ifdef CONFIG_MXC_MMC
#include <asm/arch/mxcmmc.h>
#endif
@@ -209,7 +210,7 @@ int cpu_mmc_init(bd_t *bis)
void imx_gpio_mode(int gpio_mode)
{
- struct gpio_regs *regs = (struct gpio_regs *)IMX_GPIO_BASE;
+ struct gpio_port_regs *regs = (struct gpio_port_regs *)IMX_GPIO_BASE;
unsigned int pin = gpio_mode & GPIO_PIN_MASK;
unsigned int port = (gpio_mode & GPIO_PORT_MASK) >> GPIO_PORT_SHIFT;
unsigned int ocr = (gpio_mode & GPIO_OCR_MASK) >> GPIO_OCR_SHIFT;
@@ -228,11 +229,11 @@ void imx_gpio_mode(int gpio_mode)
/* Data direction */
if (gpio_mode & GPIO_OUT) {
- writel(readl(®s->port[port].ddir) | 1 << pin,
- ®s->port[port].ddir);
+ writel(readl(®s->port[port].gpio_dir) | 1 << pin,
+ ®s->port[port].gpio_dir);
} else {
- writel(readl(®s->port[port].ddir) & ~(1 << pin),
- ®s->port[port].ddir);
+ writel(readl(®s->port[port].gpio_dir) & ~(1 << pin),
+ ®s->port[port].gpio_dir);
}
/* Primary / alternate function */
diff --git a/arch/arm/include/asm/arch-mx27/gpio.h b/arch/arm/include/asm/arch-mx27/gpio.h
new file mode 100644
index 0000000..4b4eb0d
--- /dev/null
+++ b/arch/arm/include/asm/arch-mx27/gpio.h
@@ -0,0 +1,55 @@
+/*
+ * Copyright (C) 2012
+ * Philippe Reynes <tremyfr at yahoo.fr>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+
+#ifndef __ASM_ARCH_MX27_GPIO_H
+#define __ASM_ARCH_MX27_GPIO_H
+
+/* GPIO registers */
+struct gpio_regs {
+ u32 gpio_dir; /* DDIR */
+ u32 ocr1;
+ u32 ocr2;
+ u32 iconfa1;
+ u32 iconfa2;
+ u32 iconfb1;
+ u32 iconfb2;
+ u32 gpio_dr; /* DR */
+ u32 gius;
+ u32 gpio_psr; /* SSR */
+ u32 icr1;
+ u32 icr2;
+ u32 imr;
+ u32 isr;
+ u32 gpr;
+ u32 swr;
+ u32 puen;
+ u32 res[0x2f];
+};
+
+/* This structure is used by the function imx_gpio_mode */
+struct gpio_port_regs {
+ struct gpio_regs port[6];
+};
+
+#endif
diff --git a/arch/arm/include/asm/arch-mx27/imx-regs.h b/arch/arm/include/asm/arch-mx27/imx-regs.h
index f7cf85b..f78d5f2 100644
--- a/arch/arm/include/asm/arch-mx27/imx-regs.h
+++ b/arch/arm/include/asm/arch-mx27/imx-regs.h
@@ -164,29 +164,6 @@ struct gpt_regs {
#define PORTE 4
#define PORTF 5
-struct gpio_regs {
- struct {
- u32 ddir;
- u32 ocr1;
- u32 ocr2;
- u32 iconfa1;
- u32 iconfa2;
- u32 iconfb1;
- u32 iconfb2;
- u32 dr;
- u32 gius;
- u32 ssr;
- u32 icr1;
- u32 icr2;
- u32 imr;
- u32 isr;
- u32 gpr;
- u32 swr;
- u32 puen;
- u32 res[0x2f];
- } port[6];
-};
-
/* IIM Control Registers */
struct iim_regs {
u32 iim_stat;
@@ -474,6 +451,13 @@ struct fuse_bank0_regs {
#define TSTAT_CAPT (1 << 1) /* Capture event */
#define TSTAT_COMP 1 /* Compare event */
+#define GPIO1_BASE_ADDR 0x10015000
+#define GPIO2_BASE_ADDR 0x10015100
+#define GPIO3_BASE_ADDR 0x10015200
+#define GPIO4_BASE_ADDR 0x10015300
+#define GPIO5_BASE_ADDR 0x10015400
+#define GPIO6_BASE_ADDR 0x10015500
+
#define GPIO_PIN_MASK 0x1f
#define GPIO_PORT_SHIFT 5
diff --git a/drivers/gpio/mxc_gpio.c b/drivers/gpio/mxc_gpio.c
index e9bf278..2c79bff 100644
--- a/drivers/gpio/mxc_gpio.c
+++ b/drivers/gpio/mxc_gpio.c
@@ -41,13 +41,15 @@ static unsigned long gpio_ports[] = {
[0] = GPIO1_BASE_ADDR,
[1] = GPIO2_BASE_ADDR,
[2] = GPIO3_BASE_ADDR,
-#if defined(CONFIG_MX25) || defined(CONFIG_MX51) || defined(CONFIG_MX53) || \
- defined(CONFIG_MX6Q)
+#if defined(CONFIG_MX25) || defined(CONFIG_MX27) || defined(CONFIG_MX51) || \
+ defined(CONFIG_MX53) || defined(CONFIG_MX6Q)
[3] = GPIO4_BASE_ADDR,
#endif
-#if defined(CONFIG_MX53) || defined(CONFIG_MX6Q)
+#if defined(CONFIG_MX27) || defined(CONFIG_MX53) || defined(CONFIG_MX6Q)
[4] = GPIO5_BASE_ADDR,
[5] = GPIO6_BASE_ADDR,
+#endif
+#if defined(CONFIG_MX53) || defined(CONFIG_MX6Q)
[6] = GPIO7_BASE_ADDR,
#endif
};
--
1.7.4.4
More information about the U-Boot
mailing list